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A fast GNSS satellite selection algorithm for continuous real-time positioning
Benefiting from global navigation satellite systems (GNSS), the spatial distribution of satellites and the positioning accuracy of receivers have...
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A new GNSS-acoustic positioning software implementing multiple positioning functions considering nadir total delays
Global navigation satellite system-acoustic (GNSS-A) positioning is an important geodetic observation technique for detecting seafloor crustal...
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Improving performances of GNSS positioning correction using multiview deep reinforcement learning with sparse representation
High-accuracy GNSS positioning in urban environments is important for applications like safe autonomous driving, however, dynamic errors in complex...
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A new efficient fusion positioning method for single-epoch multi-GNSS based on the theoretical analysis of the relationship between ADOP and PDOP
The global navigation satellite system (GNSS) can provide single-epoch differential positioning services for geological disasters with a sudden and...
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Homogeneous PPP–RTK user positioning performance as a consequence of network integer ambiguity resolution
PPP–RTK, a synthesis of precise point positioning (PPP) and real-time kinematic (RTK) techniques, achieves fast integer ambiguity resolution-enabled...
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Detecting outliers in local ionospheric model for GNSS precise positioning
Global Navigation Satellite System fast precise positioning can be achieved with accurate ionospheric corrections computed from an adequate number of...
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Smartphone RTK positioning with multi-frequency and multi-constellation raw observations: GPS L1/L5, Galileo E1/E5a, BDS B1I/B1C/B2a
In the field of mass-market location-based services, smartphones have become the mainstream terminals by their ubiquity, portability, and low cost....
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An improved positioning model of deep-seafloor datum point at large incidence angle
The inhomogeneous sound speed in seawater causes refraction of sound waves, and the elimination of the refraction effect is essential to the accuracy...
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Research and application of microseismic nonlinear optimal positioning methods
The impact of vibration wave propagation and various anisotropic media can cause divergence problems in the traditional linear positioning solution...
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Global single-epoch narrow-lane ambiguity resolution with multi-constellation and multi-frequency precise point positioning
Automatic driving has led to a great demand for global instantaneous high-precision precise point positioning (PPP). To achieve global instantaneous...
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Sequential GNSS-Acoustic seafloor point positioning with modeling of sound speed variation
Seafloor real-time positioning is important for the instantaneous detection of seafloor crustal motion, seismic activities, hydrological rapid...
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Observations and positioning quality of low-cost GNSS receivers: a review
Over the past two decades, low-cost single-frequency Global Navigation Satellite System (GNSS) receivers have been used in numerous engineering...
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A real-time accuracy prediction model on time-relative positioning method considering the correlation of position increment errors
Time-relative positioning (TRP), a global navigation satellite system (GNSS) dead reckoning method with low-cost and highly autonomous...
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A comparison of two PPP-RTK models: S-basis choice, network product precision, and user positioning performance
PPP-RTK combines the advantages of both precise point positioning (PPP) and real-time kinematic (RTK) techniques. While constructing PPP-RTK models...
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GNSS direct position estimation-inspired positioning with pseudorange correlogram for urban navigation
Multipath (MP) reception has been among the main issues for accurate and reliable positioning in urban environments. It has been shown to introduce...
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Improving the combined GNSS/INS positioning by using tightly integrated RTK
GNSS/INS combined technology is nowadays one of the most widely used high-precision positioning methods for outdoor users. However, the performance...
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An approximate travel time calculation and a robust GNSS-acoustic positioning method using an MCMC technique
It is important to consider horizontal heterogeneity in an underwater sound speed structure to accurately estimate positions of GNSS-acoustic sites....
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LEO augmented precise point positioning using real observations from two CENTISPACE™ experimental satellites
LEO augmentation systems are attracting worldwide attention. However, their performance in real-world environments has not yet been reported,...
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Evaluation of NLLoc positioning method and seismogenic structure analysis of Luanzhou MS 4.3 earthquake
NLLoc is a nonlinear search positioning method. In this study, we use simulated arrival time data to quantitatively evaluate the NLLoc method from...
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Improved method for the GPS high-precision real-time satellite clock error service
The real-time service (RTS) of satellite clock offsets is one of the main routine tasks for real-time precise point positioning (PPP). The quadratic...
